fix broken links (#4054)

Author: mairaw

xml/System.Web/SiteMap.xml

@@ -71,7 +71,7 @@
     <altmember cref="T:System.Web.UI.WebControls.TreeView" />
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/e468hxky(v=vs.100)">ASP.NET Site Navigation Overview</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/yy2ykkab(v=vs.100)">ASP.NET Site Maps</related>
-    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)5">ASP.NET Site Navigation Providers</related>
+    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)">ASP.NET Site Navigation Providers</related>
   </Docs>
   <Members>
     <Member MemberName="CurrentNode">

xml/System.Web/SiteMapProvider.xml

@@ -68,7 +68,7 @@ catalog.aspx,Online Catalog,Browse Our Many Great Items!,default.aspx
     <altmember cref="T:System.Web.XmlSiteMapProvider" />
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/e468hxky(v=vs.100)">ASP.NET Site Navigation Overview</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/yy2ykkab(v=vs.100)">ASP.NET Site Maps</related>
-    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)5">ASP.NET Site Navigation Providers</related>
+    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)">ASP.NET Site Navigation Providers</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/ms227425(v=vs.100)">Securing ASP.NET Site Navigation</related>
     <related type="Article" href="~/docs/framework/app-domains/working-with-assemblies-and-the-gac.md">Working with Assemblies and the Global Assembly Cache</related>
   </Docs>

xml/System.Web/SiteMapProviderCollection.xml

@@ -45,7 +45,7 @@ AccessSiteMapProvider   Samples.AspNet.Controls.AccessSiteMapProvider
     </remarks>
     <altmember cref="T:System.Collections.Hashtable" />
     <altmember cref="P:System.Web.SiteMap.Providers" />
-    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)5">ASP.NET Site Navigation Providers</related>
+    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)">ASP.NET Site Navigation Providers</related>
   </Docs>
   <Members>
     <Member MemberName=".ctor">

xml/System.Web/StaticSiteMapProvider.xml

@@ -94,7 +94,7 @@ NODEID URL            NAME       PARENTNODEID
     <altmember cref="T:System.Web.SiteMap" />
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/e468hxky(v=vs.100)">ASP.NET Site Navigation Overview</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/yy2ykkab(v=vs.100)">ASP.NET Site Maps</related>
-    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)5">ASP.NET Site Navigation Providers</related>
+    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)">ASP.NET Site Navigation Providers</related>
   </Docs>
   <Members>
     <Member MemberName=".ctor">

xml/System.Web/XmlSiteMapProvider.xml

@@ -67,7 +67,7 @@
     <altmember cref="T:System.Web.StaticSiteMapProvider" />
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/e468hxky(v=vs.100)">ASP.NET Site Navigation Overview</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/yy2ykkab(v=vs.100)">ASP.NET Site Maps</related>
-    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)5">ASP.NET Site Navigation Providers</related>
+    <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/4ht3k9tx(v=vs.100)">ASP.NET Site Navigation Providers</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/ms178418(v=vs.100)">How to: Add Simple Site Navigation</related>
     <related type="Article" href="https://docs.microsoft.com/previous-versions/aspnet/ms227425(v=vs.100)">Securing ASP.NET Site Navigation</related>
   </Docs>

xml/System.Windows/FrameworkElement.xml

@@ -1318,7 +1318,7 @@
  [!code-csharp[CustomControlNumericUpDown#StaticCtorOfCustomClassCommonTasks](~/samples/snippets/csharp/VS_Snippets_Wpf/CustomControlNumericUpDown/CSharp/CustomControlLibrary/NumericUpDown2.cs)]
  [!code-vb[CustomControlNumericUpDown#StaticCtorOfCustomClassCommonTasks](~/samples/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary/numericupdown2.vb)]  
 
-  The complete source code for this example is available on GitHub for both [C#](https://github.com/dotnet/samples/tree/master/snippets/csharp/VS_Snippets_Wpf/CustomControlNumericUpDown/CSharp/CustomControlLibrary) and [Visual Basic](https://github.com/dotnet/samples/tree/master/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary).
+  The complete source code for this example is available on GitHub for both [C#](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/csharp/VS_Snippets_Wpf/CustomControlNumericUpDown/CSharp/CustomControlLibrary) and [Visual Basic](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/visualbasic/VS_Snippets_Wpf/CustomControlNumericUpDown/visualbasic/customcontrollibrary).
 
  ]]></format>
         </remarks>

xml/System/DateTime.xml

@@ -153,7 +153,7 @@ Time values are measured in 100-nanosecond units called ticks. A particular date
 > [!NOTE]
 >  If you are working with a ticks value that you want to convert to some other time interval, such as minutes or seconds, you should use the <xref:System.TimeSpan.TicksPerDay?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerHour?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerMinute?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerSecond?displayProperty=nameWithType>, or <xref:System.TimeSpan.TicksPerMillisecond?displayProperty=nameWithType> constant to perform the conversion. For example, to add the number of seconds represented by a specified number of ticks to the <xref:System.DateTime.Second%2A> component of a <xref:System.DateTime> value, you can use the expression `dateValue.Second + nTicks/Timespan.TicksPerSecond`.  
 
-You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/samples/tree/master/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/samples/tree/master/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
+You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
 
 > [!NOTE]
 >  An alternative to the <xref:System.DateTime> structure for working with date and time values in particular time zones is the <xref:System.DateTimeOffset> structure. The <xref:System.DateTimeOffset> structure stores date and time information in a private <xref:System.DateTime> field and the number of minutes by which that date and time differs from UTC in a private <xref:System.Int16> field. This makes it possible for a <xref:System.DateTimeOffset> value to reflect the time in a particular time zone, whereas a <xref:System.DateTime> value can unambiguously reflect only UTC and the local time zone's time. For a discussion about when to use the <xref:System.DateTime> structure or the <xref:System.DateTimeOffset> structure when working with date and time values, see [Choosing Between DateTime, DateTimeOffset, TimeSpan, and TimeZoneInfo](~/docs/standard/datetime/choosing-between-datetime.md).  
@@ -457,7 +457,7 @@ The previous examples all assumed that <xref:System.DateTime> values are express
 [!code-vb[System.DateTime.Persistence#6](~/samples/snippets/visualbasic/System.DateTime/DateWithTimeZone.vb#6)]  
 
 > [!IMPORTANT]
->  The `DateWithTimeZone` structure is used in the next two examples, which serialize and deserialize an array of `DateWithTimeZone` objects. You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/samples/tree/master/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/samples/tree/master/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
+>  The `DateWithTimeZone` structure is used in the next two examples, which serialize and deserialize an array of `DateWithTimeZone` objects. You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/dotnet-api-docs/tree/master/samples/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
 
 By using the `DateWithTimeZone` structure, you can then persist date and time along with time zone information. The following example uses the <xref:System.Runtime.Serialization.Formatters.Binary.BinaryFormatter> class to serialize an array of `DateWithTimeZone` objects.